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FM25L16B-GTR Detailed explanation of pin function specifications and circuit principle instructions

The component you're referring to, "FM25L16B-GTR," is a product of Fujitsu (or its subsidiary companies under the same name for specific electronic components). This particular model is most likely a 16Mb (2M x 8) ferroelectric random access memory (FRAM). It is part of the FM25 series, designed for non-volatile memory applications. The "-GTR" suffix typically refers to a specific packaging or variant that includes temperature rating or other specific configurations.

Regarding the detailed specifications, pin functions, and FAQs you requested, I can provide you with a structured explanation. However, due to the technical and extensive nature of your request, let me break it down in a manageable way, especially focusing on the pin functions, packaging details, and general use instructions.

FM25L16B-GTR Pin Function Specifications and Circuit Principle Instructions

Chip Packaging

Package Type: The FM25L16B-GTR is typically available in SOP-8 (Small Outline Package), WSON-8 (Wafer-Level Chip-Scale Package), or similar small packages depending on the variant.

Pin Count: 8 pins (depending on package type, and sometimes can come with alternative pin configurations in different package forms like TSSOP, QFN, etc.).

Pin Function Description Table: Pin Number Pin Name Pin Type Pin Description 1 VDD Power Supply voltage (typically 2.7V to 3.6V). 2 VSS Ground Ground reference. 3 CS Input Chip Select: Active low to enable communication. 4 SCK Input Serial Clock : Clock input for synchronous data transfer. 5 SI Input/Output Serial Input: Data input for write operations. 6 SO Input/Output Serial Output: Data output for read operations. 7 WP Input Write Protect: Prevents writing when held low. 8 HOLD Input Hold: Freezes communication when held low, used in multi-byte communication to pause the process. Detailed Pin Function Analysis: VDD (Pin 1): This pin is connected to the power supply of the FRAM module . The operating voltage range for the FM25L16B-GTR is typically 2.7V to 3.6V. A decoupling capacitor is recommended between VDD and VSS for stable operation. VSS (Pin 2): Ground pin that is used to complete the circuit for current flow. CS (Pin 3): The Chip Select (CS) pin is an active-low control signal. When this pin is held low, it enables the FRAM chip to communicate with the microcontroller or processor. It must be held high to prevent unintended operations when not in use. SCK (Pin 4): Serial Clock pin (SCK) controls the timing of data transfer. The clock signal is generated by the host microcontroller or processor and determines when data is clocked in or out on the other pins. SI (Pin 5): Serial Input pin (SI) is used to send data to the FRAM chip during write operations. It is connected to the microcontroller’s MOSI (Master Out Slave In) line when using SPI. SO (Pin 6): Serial Output pin (SO) sends data from the FRAM chip during read operations. It is connected to the MISO (Master In Slave Out) line of the microcontroller when using SPI. WP (Pin 7): The Write Protect (WP) pin is used to disable writing to the FRAM chip. If held low, the write operation is enabled. If held high, it prevents writing to the memory. Typically used to protect data from accidental overwriting. HOLD (Pin 8): The HOLD pin can be used to pause the data transfer without deactivating the chip (keeping CS low). If the pin is held low, it will freeze the clock and prevent further clock cycles or data transmission.

FM25L16B-GTR FAQs (Frequently Asked Questions)

1. What is the voltage range of FM25L16B-GTR?

The FM25L16B-GTR operates within a voltage range of 2.7V to 3.6V.

2. How does the WP pin function?

The WP pin is used to write protect the memory. When held high, writing to the memory is disabled.

3. What is the significance of the CS pin?

The CS (Chip Select) pin is an active-low signal that enables communication between the FRAM and the host microcontroller.

4. Can the FM25L16B-GTR be used in high-speed applications?

Yes, this FRAM supports high-speed SPI operations and can achieve speeds up to 25 MHz.

5. Is the FM25L16B-GTR non-volatile?

Yes, the FM25L16B-GTR is a non-volatile memory, meaning it retains data even when power is removed.

6. How much memory does the FM25L16B-GTR have?

The FM25L16B-GTR has a 16 Mb capacity, which is equivalent to 2 Megabytes (2M x 8).

7. What is the role of the SCK pin?

The SCK pin provides the clock signal for the SPI communication protocol, determining when the data on SI and SO is shifted in or out.

8. Can I use the FM25L16B-GTR with 5V systems?

The recommended operating voltage is between 2.7V to 3.6V, and it is not advised to use it directly with a 5V system without level-shifting.

9. What is the HOLD pin used for?

The HOLD pin pauses communication by freezing the clock during multi-byte transfers.

10. Does the FM25L16B-GTR support write operations during power loss?

The FM25L16B-GTR features non-volatile memory, so it retains data without requiring constant power.

11. How do I read data from the FM25L16B-GTR?

Data is read by asserting the CS pin low, providing the clock signal via SCK, and reading the data from the SO pin.

12. Can I use this component in automotive applications?

Yes, the FM25L16B-GTR is suitable for use in industrial or automotive-grade applications, provided the correct voltage and operating conditions are maintained.

13. How do I connect the FM25L16B-GTR to a microcontroller?

You would connect the SI, SO, SCK, and CS pins to the corresponding SPI interface pins on your microcontroller.

14. What is the maximum clock frequency supported by the FM25L16B-GTR?

The maximum clock frequency is 25 MHz for SPI communication.

15. Does the FM25L16B-GTR support high-density data storage?

Yes, it supports 16Mb of memory, making it suitable for applications requiring moderate storage capacity.

16. Is the FM25L16B-GTR compatible with I2C or parallel interfaces?

No, the FM25L16B-GTR only supports SPI (Serial Peripheral Interface).

17. Can I use the FM25L16B-GTR for data logging applications?

Yes, the non-volatile nature of the FM25L16B-GTR makes it ideal for data logging applications where data persistence is required.

18. What is the endurance of the FM25L16B-GTR?

The FM25L16B-GTR can endure 10^12 read/write cycles, making it suitable for high-write applications.

19. How do I write data to the FM25L16B-GTR?

Data is written by providing a low signal on CS, clocking data into the SI pin while generating a clock signal on SCK.

20. Can I interface the FM25L16B-GTR with 3.3V logic systems?

Yes, the FM25L16B-GTR operates with 3.3V logic and is compatible with 3.3V systems.

Conclusion

This explanation provides a detailed overview of the FM25L16B-GTR pin functions, circuit operation, and common usage scenarios. If you need further clarification or additional technical information on any specific aspect, feel free to ask!